Open an elevated Command Prompt, and type "defrag /?" to know more details about the parameters used and their description. To open an elevated Command Prompt, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
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Microsoft Windows [Version 6.0.6000]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.
C:\Windows\system32>defrag /?
Description: Locates and consolidates fragmented files on local volumes to
improve system performance.
Syntax: defrag <volume> -a [-v]
defrag <volume> [{-r | -w}] [-f] [-v]
defrag -c [{-r | -w}] [-f] [-v]
Parameters:
Value Description
<volume> Specifies the drive letter or mount point path of the volume to
be defragmented or analyzed.
-c Defragments all volumes on this computer.
-a Performs fragmentation analysis only.
-r Performs partial defragmentation (default). Attempts to
consolidate only fragments smaller than 64 megabytes (MB).
-w Performs full defragmentation. Attempts to consolidate all file
fragments, regardless of their size.
-f Forces defragmentation of the volume when free space is low.
-v Specifies verbose mode. The defragmentation and analysis output
is more detailed.
-? Displays this help information.
Examples:
defrag d:
defrag d:\vol\mountpoint -w -f
defrag d: -a -v
defrag -c -v
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Regards,
Ramesh Srinivasan, Microsoft MVP [Windows Shell/User]
Windows® Troubleshooting
http://www.winhelponline.com
%windir%\system32\defrag.exe -c -i
I have this in my Task Scheduler and was wondering what the -c -i is
for? I have one drive seperated into 2 partitions (1 main, 1
backup). Does this command line defrag both C: & D:? Thanks for any
help.
